Objectives: [corrected] To investigate the fatigue subjective symptoms and VDT related risk factors in bank workers.
Methods: A total of 2178 workers (62.8% male, 37.2% female) were surveyed with a self-administered and structured questionnaire consisting of 30 fatigue symptoms and other VDT related factors regarding work characteristics, work postures, work environments, personal medical histories, etc. Fatigue subjective symptoms were divided into 3 groups of 10 questions each: a dull, drowsy and exhausted feeling (Group I), a mental decline of working motivation (Group II), or a feeling of incongruity in the body and dysfunction of autonomic nervous system (Group III). Each question was weighted as 0 for 'none', 1 for 'sometimes', and 2 for 'always'.
Results: Mean age was 35.8 +/- 7.2 years (38.9 +/- 6.0 in males, 30.6 +/- 5.8 in females), Mean work duration was 7.7 +/- 7.1 years (8.4+7.4 in males, 6.5 +/- 6.4 in females). Mean symptom score in males was 11.0 +/- 8.1 (4.9 +/- 3.1 in Group I, 3.0 +/- 3.1 in Group II, 3.1 +/- 2.8 in Group IIl) and in females was 17.5 +/- 9.5 (7.0 +/- 3.8 in Group I, 4.6 +/- 3.5 in Group II, 5.9 +/- 3.4 in Group III). Mean scores were higher in the order of Group I > III > II. Females had significanntly higher scores than males in all three groups (p < 0.001). Most common symptoms complained of as 'always' or sometimes' were 'feel strained in the eyes' (85.4%) among Group I, 'find difficulty in thinking' (54.2%) amongGroup II, and 'feel stiff in the shoulders' (72.3%) among Group III. In multiple regression analysis, female, non-straight spine at workstation, more VDT work hours, history off physical therapy, glare of screen, overtime work, youngage, and non-horizontal elbow position were significantly related with high score of symptoms.
Conclusions: More supportive VDT work environment and education for correct work postures for VDT workers are recommended.